JPH0662086B2 - Four-wheel carrier - Google Patents

Description

Description: [Industrial application] The present invention relates to a four-wheel carrier that allows a driver's vehicle to travel while operating a bar handle.

[Prior Art] As a four-wheeled vehicle in which luggage is loaded on a bed and a driver travels while operating a bar handle, for example, there is a hose vehicle used in a fire scene.

This hose carrier is loaded onto a fire truck with the hose loaded on the carrier and transported to the fire scene. Then, at the scene of a fire, the fire engineer pulls it off from the fire truck, and the fireman operates the bar handle while traveling, and the hose is pulled out from the rear of the luggage carrier during this traveling.

[Problems to be Solved by the Invention] When such a four-wheel carrier is self-propelled and a firefighter accompanies while operating a bar handle or a firefighter is allowed to ride on the vehicle, the hose is transported. And very easy to withdraw.

By the way, as for the four-wheeled vehicle that is transported by a vehicle or the like and used at the destination, there is a demand to secure a space for a cargo bed in a certain size and to make the entire vehicle compact.

Therefore, in order to allow the four-wheel carrier to travel under these conditions, it is necessary to ensure that a predetermined space on the cargo bed can be secured by installing a drive device, etc. It is necessary to have a configuration that allows the vehicle to run normally.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a four-wheel carrier that has a sufficient space for a cargo bed and is capable of stable self-propelling under the condition of a carrier to be mounted on a vehicle or the like. I am trying.

[Means for Solving the Problem] In order to solve the above-mentioned problems, the present invention relates to a four-wheel vehicle that loads luggage on a luggage carrier and operates a bar handle to drive the luggage carrier, in which the luggage carrier is a lower luggage carrier and an upper luggage carrier. The lower cargo bed is arranged between the left and right drive wheels, the upper cargo bed is arranged above the lower cargo bed, and the lower cargo bed enables loading and unloading of luggage from the rear in the vehicle traveling direction. Composed,
Further, a slide frame is provided so as to be able to be taken in and out from the lower side of the lower cargo bed toward the front in the vehicle traveling direction, and a movable cargo bed and a left and right steering wheel having a width substantially equal to the left and right drive wheel widths are provided at the front part of the slide frame. And a bar handle for steering the steering wheel is provided, and the movable bed is narrower than the lower bed and is arranged between the left and right steering wheels and below the upper edge of the steering wheel. A handle is provided at an upper end of a steering shaft that rises in a substantially vertical direction from the slide frame, the movable loading platform is stored under the lower loading platform when the slide frame is stored, and the steering wheel is the driving wheel. The steering shaft and the bar handle are positioned along the front surface of the luggage carrier, and further provided with a locking position for locking the slide frame in the pull-out position and the storage position. It is set to.

[Operation] In the present invention, the loading platform is composed of the lower loading platform and the upper loading platform,
This lower cargo bed is arranged between the left and right drive wheels and is dropped between the drive wheels, so that a large lower cargo bed that opens rearward can be secured between the drive wheels, which has good loadability and low load. It has a stable center of gravity and good running performance.

In addition, a movable loading platform is provided in the front part of the slide frame that can be taken in and out from the lower side of the lower loading platform toward the front in the vehicle traveling direction.This moving loading platform is narrower than the lower loading platform and is located between the left and right steering wheels. It is located below the upper edge of the steering wheel, and has a low center of gravity and good stability and running performance. Further, since the movable loading platform is provided between the steering wheels, it is easy to load and unload luggage from the side of the vehicle or to get on and off the driver.

In addition, when the slide frame is stored, the movable loading platform is stored under the lower loading platform, the steering wheel is close to the driving wheel, and the steering shaft and the bar handle are positioned along the front surface of the loading platform. When transporting a four-wheeled vehicle, the wheelbase is short, so the whole is compact and easy to transport.

When the vehicle is self-propelled, the steering wheel is extended to the front and the wheelbase is lengthened to allow the driver to drive along with the driver while operating the bar handle, or the stability when the driver gets on the vehicle is further improved. To be done.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

In the figure, reference numeral 1 is a four-wheel carrier, and in this embodiment, it is the
As shown in the figure, a hose carrier is shown which is carried by a forklift 3 on a fire engine 2 and is transported in a supported state. The loading platform 4 of this hose carrier is composed of a lower loading platform 4a and an upper loading platform 4b, and the lower loading platform 4a is arranged between the left and right large-diameter drive wheels 10 and above the lower loading platform 4a. A loading platform 4b is arranged.

The lower cargo bed 4a is open at the rear in the vehicle traveling direction, and luggage such as a fire extinguisher can be taken in and out from this rear. The upper side of the upper loading platform 4b is opened, and the loading platform 4 is configured so that the hose can be folded from above to be loaded.

As described above, the luggage carrier 4 is composed of the lower luggage carrier 4a and the upper luggage carrier 4b, and the lower luggage carrier 4a is disposed between the left and right large-diameter drive wheels 10 and dropped between the drive wheels 10. Cage,
As a result, a large lower cargo bed 4a that opens rearward can be secured between the drive wheels 10, and the loadability is good, and the center of gravity is low and the stability and running performance are good.

As shown in FIGS. 1 and 3, a motor 5 as a driving device is provided in the lower front part of the lower loading platform 4a, and its driving force is composed of a chain 6, a differential gear 7, an output shaft 8 and a chain 9. It is transmitted to each drive wheel 10 from both sides of the lower cargo bed 4a via the power transmission device. This drive wheel 10
Is rotatably provided on the axle 11 supported by the lower cargo bed 4a.

The output shaft 8 extends from the differential 7 to both sides in the vehicle width direction. The output shaft 8 has a brake disc 1 as shown in FIG.
2 is fixed so as to be able to rotate integrally, and is braked by a disc brake 13 which is operated by mechanical force.

Storage cases 14 are attached to both upper sides of the lower cargo bed 4a, and one storage case 14 stores a battery 15, which is a drive power source of the motor 5. As shown in FIG. 3, a power switch 17 for the motor 5, a forward / reverse switching lever 18 for the vehicle, and a charging door 19 for the battery 15 are attached to the front cover 16 that covers the drive unit, the power transmission unit, and the like. .

The battery 15 is charged by loading the charging door 19 upward and inserting the charging plug of a charging device (not shown) straight when the fire truck 2 is loaded and stopped in the garage.
Therefore, even if the driver forgets to pull out the charging plug when starting the hose carrier, the charging plug will naturally come off when starting.

A pair of slide frames 21 are provided so as to be able to be put in and taken out from the lower side of the lower cargo bed 4a toward the front in the vehicle traveling direction, and a movable cargo bed 26 is provided at the front part of the slide frames 21 and has a width substantially equal to the left and right drive wheel widths. The left and right steering wheels 20 and a bar handle 62 for steering the steering wheels 20 are provided.

The movable bed 26 is narrower than the lower bed 4a and is arranged between the left and right steering wheels 20 and below the upper edge of the steering wheel 20, and the bar handle 62 stands up from the slide frame 21 in a substantially vertical direction. When the slide frame 21 is stored, the movable loading platform 26 is stored under the lower loading platform 4a, the steering wheels 20 are close to the driving wheels 10, and the steering shaft 51 and the bar handle 62 are down. It is located along the front surface of the side loading platform 4a.

That is, the steering wheel 20 is rotatably supported by the front frame 22 provided at the front ends of the pair of slide frames 21 via the suspension device 23, and the steering wheel 20 is supported by the tie rods 2.
Turn to the left and right with the operation of 4. A pair of slide frames 2
An intermediate frame 25 is connected between the first and second frames, and a wire net is laid between the intermediate frame 25 and the front frame 22 to form a movable carrier 26. In this way, the movable bed 26 is made narrower than the lower bed 4a, and the left and right steering wheels 20 are
It is located between the steering wheel 20 and the steering wheel 20.
A lighting device, a generator, or the like used for extinguishing a fire can be mounted on the mobile platform 26, and a driver can also board the vehicle. The movable carrier 26 may be formed of a plate, and further, a stop member for supporting a lighting device, a generator or the like on the movable carrier 26 may be provided.

As described above, the movable loading platform 26 is provided in the front portion of the slide frame 21 that is provided so as to be able to move in and out from the lower side of the lower loading platform 4a toward the front in the vehicle traveling direction, and the moving loading platform 26 is narrower than the lower loading platform 4a. Is located between the left and right steering wheels 20 and below the upper edge of the steering wheel 20, and has a low center of gravity and good stability and running performance. Furthermore, since the movable loading platform 26 is provided between the steering wheels 20, loading and unloading of luggage from the side of the vehicle,
Alternatively, it is easy for the driver 9 to get on and off.

As shown in FIG. 1, the slide frame 21 is slidably supported by a rear guide portion 27 provided in the lower central portion of the lower loading platform 4a and a front guide portion 28 provided in the front portion. ing.

As shown in FIG. 5, the rear guide portion 27 has a mounting bracket 30 fixed by a bolt 31 between a pair of lower loading platform frames 29, and a pair of support brackets 32 fixed to the mounting bracket 30. There is.

Bearings 33 are fixed at upper and lower symmetrical positions of the support bracket 32, and a collar 34 is horizontally suspended between the bearings 33. A support bolt 35 is inserted into and fixed to the collar 34 to guide the slide of the slide rail 21 in the vertical direction. A guide portion 36 formed of a round bar is fixed inside the support bracket 32.
Guides the sliding of the slide rail 21 in the left-right direction.

The front guide portion 28 is configured as shown in FIG. That is, the mounting bracket 37 is the upper loading frame 3
8 and connecting frame 3 for connecting the carrier frame 38
9 and 9 are fixed by bolts 40, respectively.

A pair of support brackets 41 are fixed to the lower side of the mounting bracket 37, one of the support brackets 41 extends to the lower side of the slide rail 21, and the other support bracket 41 is positioned on the upper side. A bearing 43 is provided on the support bolt 42 inserted through the pair of support brackets 41, and the upper portion of the slide frame 21 is slidably guided by the bearing 43.

As shown in FIG. 1, a rear side locking claw 44 is fixed inside the rear end of the slide rail 21, and a front side locking claw 45 is also fixed to the front side frame 22 supporting the steering wheel 20. There is. By the stopper 46 provided on the front side of the lower loading platform 4a and moving in the vertical direction, the rear side locking pawl 44 is fixed in a state where the steering wheel 20 is moved to the front side, and the steering wheel 20 is moved to the rear side. In the state, the front side locking claw 45 is fixed, and thus a locking device for locking the slide frame 21 at the pull-out position and the storage position is configured, and this lock position ensures the positioning of the pull-out position and the storage position. Has become.

The upper end of the stopper 46 is connected to a rotary shaft 47 supported by the lower cargo bed 4a, and fixed levers 48 are fixed to both ends of the rotary shaft 47. When one of the fixing levers 48 is moved up and down, the rotating shaft 47 is rotated, whereby the stopper 46 is moved up and down to lock or release the locking claws 44 and 45. In this way, the fixed lever 48, which is the operator of the locking device, is provided at a high position for easy operation.

A post 49 is rotatably provided at the center of the front frame 22 as shown in FIGS.
9 is connected to the tie rod 24 via a lever 50. A relatively long steering shaft 51 having substantially the same height as the luggage carrier 4 is vertically supported by the post 49. That is, the support shaft 52 fixed to the lower end of the steering shaft 51 is rotatably supported by the support bolt 53 supported by the post 49. A lock member 54 is slidably provided at a lower end portion of the steering shaft 51, and a spring 55 is contracted between an upper portion of the lock member 54 and a flange portion of the steering shaft 51 and is locked by the spring 55. The member 54 is always biased downward.
Below the lock member 54, a guide groove 56 is formed in the axial direction from the lower end portion to the substantially central portion. This guide groove 56
Restricts the locking member 54 from moving downward and allows the locking member 54 to move upward.

A lock hole 57 is formed in the post 49 so that the lock member 54 obliquely penetrates from the front to the rear, and an axial guide groove 58 is formed in the front lock hole 57.

The support shaft 52 of the steering shaft 51 is formed such that the central portion thereof has the same width as the guide groove 58 of the post 49, and
When 4 is moved upward and pulled out from the post 49, the support shaft 52 is guided by the guide groove 58. As a result, the steering shaft 51 is tilted to the front side, and when the lock member 54 is inserted into the lock hole 57 at this position, the steering shaft 51 is locked.

A bracket 59 is fixed to the upper portion of the steering shaft 51, and a lower block 60a provided on the bracket 59 is fixed.
The upper block 60b is positioned on the bracket 59 by the support pin 61, and the bar handle 62 is inserted therebetween,
It is fixed by a bolt 64 and an adjustment handle 65 via a cover 63.

As shown in FIGS. 2 and 3, the bar handle 62 extends in the vehicle width direction, bends inside the grip portion 66, and the grip portion 66 is located on the front side. The bar handle 62 can be moved in the vehicle width direction when the adjustment handle 65 is loosened, and can be rotated to adjust the front-back direction and the height position of the grip portion 66.

The grip portion 66 is provided with a brake lever 67 and a motor control lever 68, which are connected to the disc brake 12 and the motor 5 by respective wires 69 and 70. The respective wires 69 and 70 have a bend which allows the bar handle 62 to move in the axial direction.

The brake lever 71 is also provided on the steering shaft 51, and is used when the vehicle travels on a curb or the like.
It may be moved while holding, and in this case, the brake operation is made easy.

Next, the operation of this embodiment will be described.

When this hose carrier is carried by the fire engine 2, the slide rail 21 is slid backward so that the front locking pawl 45
Is locked by the stopper 46, and the steering wheel 20 is moved toward the drive wheel 10. As a result, the wheel base is shortened, and the drive device and the power transmission device are located in the space between the pair of steering wheels 20. Thus, the pair of steering wheels 2
By effectively utilizing the space formed between 0, the space of the lower cargo bed 4a can be secured to a predetermined size.

Then, in this state, the steering shaft 51 is attached to the lower loading platform 4a.
Vertically supported along the front side of the bar handle 62
Also, since the central portion is supported by the steering shaft 51 and the whole is compact, it is easy to carry.

When traveling, one of the fixed levers 48 is operated to disengage the stopper 46 from the front locking pawl 45, whereby the slide rail 21 is unlocked, whereby the bar handle 62 is pulled to the front side. Is moved to the front side and the fixing lever 48 is operated to lock the rear locking claw 44 with the stopper 46, thereby lengthening the wheel base.

Then, when the motor 5 is driven, the drive wheels 10 supported by the lower cargo bed 4a are driven via the chain rails 9 of the power transmission mechanism arranged on both sides of the lower cargo bed 4a, so that the hose carrier is self-propelled. . At this time, the driver operates the bar handle 6
The operator rides while holding 2 and accompanies the ride, or the driver rides on the mobile platform 26 and runs. In this way, since the hose carrier is self-propelled, it is easy to transport the hose, and the steering wheel 2
0 moves in the forward direction of the vehicle and the wheelbase becomes longer, which further increases the running stability.

Further, when a firefighter runs while operating the bar handle 62, if it is an obstacle when turning the steered wheels 20 because of the four wheels, loosen the adjustment handle 65 and Of the grip 6
Carrying with 6 will allow you to drive away from the vehicle and avoid getting in the way.

Further, the lock member 54 at the lower end of the steering shaft 51
Is lifted upward, the lock is released, the steering shaft 51 is tilted forward, and the lock member 54 is moved to the post 49.
When the bar handle 62 is tilted forward and locked, the position of the grip portion 66 moves toward the front side of the steering wheel 20 and is further separated. Therefore, the companion run becomes easier.

Further, when the steering shaft 51 or the bar handle 62 is lifted when the vehicle gets over a curb or the like, the lever ratio becomes long due to the steering shaft 51 inclining to the front side. It is easy to overcome such problems.

In addition, although this embodiment explained the hose carrier,
The same applies to other four-wheel vehicles.

[Effects of the Invention] As described above, according to the present invention, the loading platform is composed of the lower loading platform and the upper loading platform, and the lower loading platform is disposed between the left and right driving wheels and dropped between the driving wheels. As a result, a large lower cargo bed that opens to the rear can be secured between the drive wheels, and the loadability is good, and the center of gravity is low and the stability and running performance are good.

In addition, a movable loading platform is provided in the front part of the slide frame that can be taken in and out from the lower side of the lower loading platform toward the front in the vehicle traveling direction.This moving loading platform is narrower than the lower loading platform and is located between the left and right steering wheels. Since it is placed below the upper edge of the steering wheel,
It has a low center of gravity and has good stability and running performance. Further, since the movable loading platform is provided between the steering wheels, it is easy to load and unload luggage from the side of the vehicle or to get on and off the driver.

When the slide frame is stored, the moving bed is stored under the lower bed, the steering wheels are close to the drive wheels, and the steering shaft and bar handle are located along the front of the bed. Since the wheelbase is short during transportation of the carrier, the whole is compact and easy to carry.

On the other hand, when the vehicle is self-propelled, the steering wheel is extended to the front and the wheelbase is lengthened to allow the driver to drive along with the driver while operating the bar handle, or when the driver is on board and is stable. It will be further improved.

[Brief description of drawings]

FIG. 1 is a side view of a four-wheeled vehicle, FIG. 2 is a plan view, FIG. 3 is a front view, FIG. 4 is a partial sectional plan view showing a supporting state of drive wheels, and FIG. 5 is a slide rail. 6 is a sectional view of the front guide portion of the guide rail, FIG. 7 is a sectional view of the support portion of the steering shaft, and FIG.
FIG. 8 is a sectional view taken along the line VIII-VIII, FIG. 9 is a front view of the steering shaft post, and FIG. 10 is a sectional view of the bar handle support portion. DESCRIPTION OF SYMBOLS 1 ... Four-wheel carrier 4 ... Cargo 5 ... Motor 10 ... Drive wheel 20 ... Steering wheel 51 ... Steering shaft 52 ... Support shaft 62 ... Bar handle

Claims (1)

[Claims] 1. A four-wheel carrier for loading luggage on a cargo bed and operating a bar handle for traveling, wherein the cargo bed comprises a lower cargo bed and an upper cargo bed, and the lower cargo bed has left and right drive wheels. The upper cargo bed is disposed above the lower cargo bed, and the lower cargo bed is configured to allow loading and unloading of cargo from the rear in the vehicle traveling direction. A slide frame is provided so as to be able to be taken in and out toward the front, a movable loading platform is provided at the front part of the slide frame, and left and right steering wheels having a width substantially equal to the left and right driving wheel widths,
A bar handle for steering the steering wheel is provided, and the movable bed is narrower than the lower bed and is arranged between the left and right steering wheels and below the upper edge of the steering wheel, and the bar handle is It is provided on an upper end of a steering shaft that rises in a substantially vertical direction from the slide frame, and when the slide frame is stored, the movable loading platform is stored under the lower loading platform, and the steering wheel is close to the driving wheel. A four-wheel vehicle, wherein the steering shaft and the bar handle are positioned along the front surface of the luggage carrier, and further provided with locking positions for locking the slide frame at the pull-out position and the storage position.